Fix line break on if block.

git-svn-id: http://blockly.googlecode.com/svn/trunk@1276 c400ca83-b69d-9dd7-9705-49c6b8615e23
Remove main editor frame from Block Factory; now the app works in Chrome on file://, though with the loss of the preview.  Fix angle input widget to display degree symbol after refusing an invalid input.  Switch Block Factory's hue block to use angle input.

R=spertus@google.com

Review URL: https://codereview.appspot.com/12905045

git-svn-id: http://blockly.googlecode.com/svn/trunk@1277 c400ca83-b69d-9dd7-9705-49c6b8615e23